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Monfort breaks world record for Class 3-5 all electric cab-over truck. 75mph continuous speed using one electric motor and 6 speed gear box. Patent Pending (World Guinness Book record holder) Here is how it works and why you can only use multi gear systems for larger electric trucks and buses. When RPM range is 500rpm at idle using torque converter and 2,200 peak all components stay below 120deg f. DANGER: High RPM direct drive can damage gears at high RPM and increase the motor temp to well over a dangerous 220 degrees f when traveling at highway speeds. Monforts multi gear system: Close ratio 1st gear 3.51 1st gear peak torque is 4100 ft lbs 1st gear continuous torque is 2,600 ft lbs ........ Monforts 4th gear offers 1.0 close ratio 4th gear peak torque is 1,100 ft lbs. 4th gear continuous torque is 770 ft lbs. DATA testing specs: Using 200aH, 138kwh battery pack Temperature of Inverter 92 deg f. Temperature of motor 98 deg f. Top RPM was 1388 at 74mph while in 6th gear overdrive.